Electricity + Control October 2015

PRESSURE + LEVEL MEASUREMENT

ROUND UP

Speed monitors with high input frequency

ifm electronic ’s range of speed monitors with high input frequency from as low as one pulse per minute up to 60 000 pulses / minute now include an extended operat- ing temperature range down to 40°C below zero. Their luminous OLED display is not only clearer but also brighter. Several versions are available: Speed monitors DD2503 and DD2603 monitor the rotational speed of one channel with two separately adjustable limit values. A separate switched output is assigned to each limit value and an analogue signal is provided for further processing or display.

The DD2505 and DD2605 monitor two separate input channels, each having one switch point. The DD2603 and DD2605 can also check that the sensor cabling is intact (when used with the recommended sensors). Other devices in the range fulfil other vital func- tions: the DR2503 and DR2505 will check that a piece of machinery, such as a hoist or a pump, is rotating in the desired direc- tion, as dire consequences can result if the direction is wrong.

Enquiries:Tel. 012 450 0370 or email info.za@ifm.com

Mechatronic flow meter with digital display ifm electronic has fitted its new inline flow meters with a rotatable multi-colour display which is clearly visible from all sides. A red/ green colour selection of the display values clearly signals to the user when the set val- ues are too high or too low. Moreover, the device has a fast response time of < 10 ms. The piston located in the valve seat in the housing is lifted by the flowing medium against the spring. The piston position is monitored via a magnetic field sensor and output as an analogue signal. The spring resistance forces the piston to return to its original position with decreasing flow.This

ensures position-independent installation of the flow meter preventing backflow.The sensor head can be rotated by 360°C so that it can be read in any position.Two switching status LEDs on the sensor head, which are clearly visible from all sides, indicate the set and reset points.The device is rated for me- dium temperatures up to 100°C and it can also measure and display the temperature. Thanks to its three pushbuttons, setting is quick and easy.With the IO-Link functional- ity the user is more than fit for Industry 4.0.

Enquiries:Tel. 012 450 0370 or email info.za@ifm.com